15245989 has 8 divisors (see below), whose sum is σ = 16662240. Its totient is φ = 13834800.

The previous prime is 15245983. The next prime is 15246029. The reversal of 15245989 is 98954251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15245989 - 2³ = 15245981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15245981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8067 + ... + 9775.

It is an arithmetic number, because the mean of its divisors is an integer number (2082780).

Almost surely, 2^15245989 is an apocalyptic number.

It is an amenable number.

15245989 is a deficient number, since it is larger than the sum of its proper divisors (1416251).

15245989 is a wasteful number, since it uses less digits than its factorization.

15245989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531.

The product of its digits is 129600, while the sum is 43.

The square root of 15245989 is about 3904.6112482551. The cubic root of 15245989 is about 247.9620400190.

The spelling of 15245989 in words is "fifteen million, two hundred forty-five thousand, nine hundred eighty-nine".